Soroban Smart Contracts Explorer

Introduction

The Soroban Smart Contracts Explorer is a premium tool designed for Web3 developers, startups, and auditors who need deep visibility into Soroban smart contracts on the Stellar network. Unlike basic block explorers, our tool provides decoded contract data, making it easy to understand what contracts are doing without manually parsing XDR-encoded data.

Dashboard

The Contracts Explorer dashboard at /contracts provides a centralized interface for exploring Soroban smart contracts.

Subscription Tiers

Soroban Pro features are available across different subscription tiers, each designed for specific use cases.

</>Decoded Calls

Soroban smart contract calls are encoded in XDR (External Data Representation) format, making them difficult to read in their raw form. The Decoded Calls feature automatically parses and decodes this data into human-readable format.

What Gets Decoded

Example: Raw vs Decoded

AAAAAgAAAADo...base64_encoded_xdr_data...AAAAAAAAAA==

{
  "function": "transfer",
  "parameters": {
    "from": "GABC...XYZ",
    "to": "GDEF...UVW",
    "amount": 1000000000  // 100 tokens (7 decimals)
  },
  "result": {
    "type": "void",
    "success": true
  },
  "gas_used": 234567,
  "timestamp": "2026-02-13T10:30:00Z"
}

Call History Table

The Call History view displays all invocations of a contract with the following columns:

Filtering Calls

Use the filter options to narrow down the call history:

• Function name - Filter by specific function (e.g., transfer)
• Caller address - Show calls from a specific account
• Status - Filter by success or failed calls only
• Date range - Specify start and end dates
• Gas range - Filter by minimum/maximum gas consumed

{ }Storage Viewer

The Storage Viewer provides a complete view of a contract's on-chain state. Soroban contracts store data in key-value pairs, and this tool decodes both keys and values into readable formats.

Storage Types

Soroban supports three types of contract storage, each with different characteristics:

Storage Table

The Storage Viewer displays contract state in a sortable, searchable table:

Example: Token Contract Storage

// Token contract storage entries (decoded)
┌────────────────────────────────────┬────────────┬─────────────────┐
│ Key                                │ Type       │ Value           │
├────────────────────────────────────┼────────────┼─────────────────┤
│ Admin                              │ Instance   │ GABC...XYZ      │
│ Name                               │ Instance   │ "MyToken"       │
│ Symbol                             │ Instance   │ "MTK"           │
│ Decimals                           │ Instance   │ 7               │
│ Balance:GABC...XYZ                 │ Persistent │ 1000000000000   │
│ Balance:GDEF...UVW                 │ Persistent │ 500000000000    │
│ Allowance:GABC...XYZ:GDEF...UVW    │ Temporary  │ 100000000000    │
└────────────────────────────────────┴────────────┴─────────────────┘

Storage Snapshots

Team and higher tiers can access historical storage snapshots to see how contract state has changed over time. Snapshots are taken at regular intervals and can be compared side-by-side to track state changes.

~>Event Stream

Soroban contracts emit events to communicate state changes and important actions. The Event Stream feature provides both historical event logs and real-time streaming for monitoring contract activity.

Event Structure

Each Soroban event contains the following decoded information:

{
  "type": "contract",           // Event type: contract, system, or diagnostic
  "ledger": 12345678,          // Ledger sequence when event was emitted
  "timestamp": "2026-02-13T10:30:00Z",
  "contract_id": "CDLZ...XYZ",
  "topics": [                  // Event topics (indexed, searchable)
    "transfer",                // Topic 0: Event name
    "GABC...XYZ",              // Topic 1: From address
    "GDEF...UVW"               // Topic 2: To address
  ],
  "data": {                    // Event data payload
    "amount": 1000000000
  }
}

Event Types

Real-Time Streaming

To enable real-time streaming:

1. Navigate to the Events tab for a contract
2. Click the "Live Stream" toggle in the top-right
3. New events will appear automatically as they are emitted
4. Click any event row to view decoded details

Event Filtering

Filter events by:

• Event type - Contract, System, or Diagnostic
• Topic - Filter by specific topic values (e.g., "transfer")
• Date range - Historical events within a time window
• Ledger range - Events from specific ledger sequences

Common Event Patterns

AIAI Explanations

AI Explanations use advanced language models to analyze contract calls and provide plain-English explanations of what happened. This feature is designed to help developers, auditors, and non-technical users understand complex smart contract interactions without deep Soroban expertise.

How It Works

Example Explanation

{
  "function": "transfer",
  "from": "GABC...XYZ",
  "to": "GDEF...UVW",
  "amount": 1000000000
}

Explanation Types

Usage Limits

AI Explanations are subject to monthly limits based on your subscription tier:

Caching

AI explanations are cached for 7 days. If you request an explanation for a call that was already analyzed, the cached response is returned instantly without counting against your monthly limit.

XDR Decoding

XDR (External Data Representation) is the binary encoding format used by Stellar and Soroban for all on-chain data. Our decoder handles the complex task of parsing XDR and converting it to readable JSON.

Supported XDR Types

Decoding Process

// 1. Raw XDR (Base64 encoded)
AAAABQAAAADo...base64...==

// 2. Parse binary XDR structure
{ type: "SCVal", value: { type: "Map", entries: [...] } }

// 3. Convert to readable format
{
  "balances": {
    "GABC...XYZ": 1000000000,
    "GDEF...UVW": 500000000
  }
}

Soroban Data Types

Soroban uses a rich type system for contract data. The explorer decodes all native types:

API Reference

Programmatic access to contract data is available via REST API for Developer tier and above.